"""/v1/solve без браузера: движок подменён, проверяются сборка ответа, коды ошибок, слоты, сессии и логи."""
import asyncio
import logging
import uuid

import pytest
from fastapi.testclient import TestClient

import main
from api import actions, profile


class FakeContext:
	async def cookies(self):
		return [{"name": "cf_clearance", "value": "secret-cookie"}]


class FakePage:
	context = FakeContext()

	async def screenshot(self, type):
		return b"png"

	async def inner_html(self, selector):
		return "<body>page</body>"

	async def evaluate(self, js):
		return "UA/engine"


class FakeSession:
	"""Вместо AsyncStealthySession: запоминает kwargs и вызывает page_action на FakePage."""
	calls: list[dict] = []
	error: Exception | None = None

	def __init__(self, **kwargs):
		FakeSession.calls.append(kwargs)

	async def __aenter__(self):
		return self

	async def __aexit__(self, *exc):
		return False

	async def fetch(self, url, page_action):
		if FakeSession.error:
			raise FakeSession.error
		return await page_action(FakePage())


@pytest.fixture
def client(monkeypatch, tmp_path):
	FakeSession.calls, FakeSession.error = [], None
	monkeypatch.setattr(main, "AsyncStealthySession", FakeSession)
	monkeypatch.setattr(main, "USER_DATA_ROOT", tmp_path)
	monkeypatch.setattr(main, "_slots", asyncio.Semaphore(2))
	monkeypatch.setattr(profile, "chrome_major", lambda: "155")
	return TestClient(main.app)


def fake_execute(result=None, exc=None):
	async def execute(*args, **kwargs):
		if exc:
			raise exc
		return result
	return execute


def post(client, **body):
	return client.post("/v1/solve", json={"url": "https://example.com", "actions": [], **body})


def test_ok(client, monkeypatch):
	monkeypatch.setattr(actions, "execute", fake_execute([{"type": "wait_for", "ok": True, "duration_ms": 5}]))
	resp = post(client, html=True, screenshot=True)

	assert resp.status_code == 200
	data = resp.json()
	assert data["status"] == "ok"
	assert "code" not in data and "error" not in data
	assert data["user_agent"] == "UA/engine"
	assert data["actions"] == [{"type": "wait_for", "ok": True, "duration_ms": 5}]
	assert data["html"] == "<body>page</body>"
	assert data["screenshot"] == "cG5n"  # base64(b"png")
	assert data["duration_ms"] >= 0
	assert uuid.UUID(resp.cookies["session_id"])


def test_html_and_screenshot_only_on_request(client, monkeypatch):
	monkeypatch.setattr(actions, "execute", fake_execute([]))
	data = post(client).json()
	assert "html" not in data and "screenshot" not in data
	assert data["actions"] == []


def test_action_failed(client, monkeypatch):
	monkeypatch.setattr(actions, "execute", fake_execute([
		{"type": "click", "ok": True, "duration_ms": 1},
		{"type": "inner_html", "ok": False, "result": "selector not found: #x", "duration_ms": 1},
	]))
	data = post(client, screenshot=True).json()
	assert data["status"] == "err"
	assert data["code"] == "action_failed"
	assert data["error"] == "inner_html: selector not found: #x"
	assert data["screenshot"]


def test_challenge_failed(client, monkeypatch):
	monkeypatch.setattr(actions, "execute", fake_execute(exc=actions.ChallengeFailed("cloudflare not passed: timeout")))
	data = post(client, screenshot=True).json()
	assert data["status"] == "err"
	assert data["code"] == "challenge_failed"
	assert data["error"] == "cloudflare not passed: timeout"
	assert data["actions"] == []
	assert data["cookies"] and data["screenshot"]


def test_request_failed(client):
	FakeSession.error = RuntimeError("net::ERR_PROXY_CONNECTION_FAILED")
	data = post(client).json()
	assert data == {
		"status": "err", "code": "request_failed", "error": "net::ERR_PROXY_CONNECTION_FAILED",
		"actions": [], "duration_ms": data["duration_ms"],
	}


def test_no_slots(client, monkeypatch):
	monkeypatch.setattr(main, "_slots", asyncio.Semaphore(0))
	resp = post(client)
	assert resp.status_code == 503
	assert resp.headers["retry-after"] == main.RETRY_AFTER
	assert resp.json() == {"status": "err", "code": "no_slots", "error": "No slots available"}
	assert FakeSession.calls == []


def test_slot_released_after_request(client, monkeypatch):
	sem = asyncio.Semaphore(1)
	monkeypatch.setattr(main, "_slots", sem)
	monkeypatch.setattr(actions, "execute", fake_execute([]))
	FakeSession.error = RuntimeError("boom")
	for _ in range(3):
		assert post(client).status_code == 200
	assert not sem.locked()


def test_invalid_request_is_422_without_browser(client):
	resp = post(client, actions=[{"type": "nope"}])
	assert resp.status_code == 422
	assert FakeSession.calls == []


def test_session_cookie_reused(client, monkeypatch, tmp_path):
	monkeypatch.setattr(actions, "execute", fake_execute([]))
	sid = str(uuid.uuid4())
	client.cookies.set("session_id", sid)
	resp = post(client)
	assert resp.cookies["session_id"] == sid
	assert FakeSession.calls[0]["user_data_dir"] == str(tmp_path / sid)


@pytest.mark.parametrize("bad", ["../../etc", "not-a-uuid", "/tmp/x"])
def test_bad_session_cookie_gets_new_session(client, monkeypatch, tmp_path, bad):
	monkeypatch.setattr(actions, "execute", fake_execute([]))
	client.cookies.set("session_id", bad)
	resp = post(client)
	sid = resp.cookies["session_id"]
	assert sid != bad and uuid.UUID(sid)
	assert [p.name for p in tmp_path.iterdir()] == [sid]


def test_user_agent_set_once_per_profile(client, monkeypatch):
	monkeypatch.setattr(actions, "execute", fake_execute([]))
	post(client, user_agent="First/1")
	post(client, user_agent="Second/2")
	assert [c["useragent"] for c in FakeSession.calls] == ["First/1", "First/1"]


def test_generated_fingerprint_passed_to_browser(client, monkeypatch):
	monkeypatch.setattr(actions, "execute", fake_execute([]))
	post(client)
	kwargs = FakeSession.calls[0]
	assert kwargs["useragent"] == profile.UA_TEMPLATE.format(major="155")
	assert set(kwargs["additional_args"]) == {"screen", "device_scale_factor"}


def test_cookies_replace_profile_cookies_only_when_passed(client, monkeypatch):
	monkeypatch.setattr(actions, "execute", fake_execute([]))
	post(client)
	post(client, cookies=[{"name": "a", "value": "1", "url": "https://example.com"}])
	post(client, cookies=[])
	assert [c["clear_cookies"] for c in FakeSession.calls] == [False, True, True]


def test_proxy_passed_and_geo_resolved(client, monkeypatch):
	monkeypatch.setattr(actions, "execute", fake_execute([]))
	seen = {}

	async def fake_geo(proxy):
		seen["proxy"] = proxy
		return {"locale": "de-DE", "timezone_id": "Europe/Berlin"}

	monkeypatch.setattr(main, "resolve_geo", fake_geo)
	post(client, proxy="http://u:p@host:3128")
	kwargs = FakeSession.calls[0]
	assert kwargs["proxy"] == {"server": "http://host:3128", "username": "u", "password": "p"}
	assert seen["proxy"] == kwargs["proxy"]
	assert (kwargs["locale"], kwargs["timezone_id"]) == ("de-DE", "Europe/Berlin")


def test_without_proxy_no_geo(client, monkeypatch):
	monkeypatch.setattr(actions, "execute", fake_execute([]))

	async def fail_geo(proxy):
		raise AssertionError("geo must not be resolved without proxy")

	monkeypatch.setattr(main, "resolve_geo", fail_geo)
	post(client)
	assert FakeSession.calls[0]["proxy"] is None


def test_secrets_not_logged(client, monkeypatch, caplog):
	monkeypatch.setattr(actions, "execute", fake_execute([]))

	async def no_geo(proxy):
		return None

	monkeypatch.setattr(main, "resolve_geo", no_geo)
	caplog.set_level(logging.DEBUG, logger="main")
	post(
		client, proxy="http://someuser:TopSecret1@host:3128", captcha="KEYSECRET2", html=True,
		cookies=[{"name": "sid", "value": "CookieSecret3", "url": "https://example.com"}],
		actions=[{"type": "fill", "selector": "#p", "value": "PassSecret4"}],
	)
	log = caplog.text
	assert "Incoming payload" in log and "Outgoing payload" in log
	for secret in ("someuser", "TopSecret1", "KEYSECRET2", "CookieSecret3", "PassSecret4", "secret-cookie", "<body>page"):
		assert secret not in log


def test_health(client):
	assert client.get("/health").json() == {"status": "ok", "browser_slots": main.BROWSER_SLOTS, "free_slots": 2}